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482 lines
14 KiB
Fortran
482 lines
14 KiB
Fortran
!!$
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!!$
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!!$ MLD2P4 version 2.0
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!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
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!!$ based on PSBLAS (Parallel Sparse BLAS version 3.3)
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!!$
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!!$ (C) Copyright 2008, 2010, 2012, 2015
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!!$
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari CNRS-IRIT, Toulouse
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!!$ Pasqua D'Ambra ICAR-CNR, Naples
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!!$ Daniela di Serafino Second University of Naples
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the MLD2P4 group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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!
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! Apply: comes in two versions, on plain arrays or on encapsulated
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! vectors.
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! This basic version just applies the local solver, whatever that
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! is.
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!
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subroutine mld_d_base_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_apply
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implicit none
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_d_base_smoother_type), intent(in) :: sm
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real(psb_dpk_),intent(inout) :: x(:)
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real(psb_dpk_),intent(inout) :: y(:)
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real(psb_dpk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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integer, intent(in) :: sweeps
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real(psb_dpk_),target, intent(inout) :: work(:)
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_smoother_apply'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%apply(alpha,x,beta,y,desc_data,trans,work,info)
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else
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info = 1121
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endif
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if (info /= psb_success_) then
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call psb_errpush(info,name)
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_apply
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subroutine mld_d_base_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,&
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& trans,sweeps,work,info)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_apply_vect
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implicit none
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_d_base_smoother_type), intent(inout) :: sm
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type(psb_d_vect_type),intent(inout) :: x
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type(psb_d_vect_type),intent(inout) :: y
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real(psb_dpk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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integer, intent(in) :: sweeps
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real(psb_dpk_),target, intent(inout) :: work(:)
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_smoother_apply'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%apply(alpha,x,beta,y,desc_data,trans,work,info)
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else
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info = 1121
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endif
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if (info /= psb_success_) then
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call psb_errpush(info,name)
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_apply_vect
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!
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! Check:
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! 1. Check that we do have a solver object
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! 2. Call its check method
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!
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subroutine mld_d_base_smoother_check(sm,info)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_check
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Implicit None
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! Arguments
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class(mld_d_base_smoother_type), intent(inout) :: sm
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_smoother_check'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%check(info)
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else
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info=3111
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call psb_errpush(info,name)
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goto 9999
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end if
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if (info /= psb_success_) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_check
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!
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! Set methods: the come in multiple versions according
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! to whether we are setting with integer, real or character
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! input.
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! The basic rule is: if the input refers to a parameter
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! of the smoother, use it, otherwise pass it to the
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! solver object for further processing.
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! Since there are no parameters in the base smoother
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! we just pass everything to the solver object.
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!
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subroutine mld_d_base_smoother_seti(sm,what,val,info)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_seti
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Implicit None
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! Arguments
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class(mld_d_base_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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integer, intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_smoother_seti'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%set(what,val,info)
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end if
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if (info /= psb_success_) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_seti
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subroutine mld_d_base_smoother_setc(sm,what,val,info)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_setc
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Implicit None
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! Arguments
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class(mld_d_base_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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character(len=*), intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_smoother_setc'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%set(what,val,info)
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end if
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if (info /= psb_success_) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_setc
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subroutine mld_d_base_smoother_setr(sm,what,val,info)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_setr
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Implicit None
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! Arguments
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class(mld_d_base_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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real(psb_dpk_), intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_smoother_setr'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%set(what,val,info)
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end if
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if (info /= psb_success_) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_setr
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!
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! Build method.
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! At base level we only have to pass data to the inner solver.
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! AMOLD/VMOLD allow to have any relevant sparse matrix or vector
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! to be stored in a given format. This is essential e.g.
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! when dealing with GPUs.
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!
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subroutine mld_d_base_smoother_bld(a,desc_a,sm,upd,info,amold,vmold)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_bld
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Implicit None
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! Arguments
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type(psb_dspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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class(mld_d_base_smoother_type), intent(inout) :: sm
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character, intent(in) :: upd
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integer, intent(out) :: info
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class(psb_d_base_sparse_mat), intent(in), optional :: amold
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class(psb_d_base_vect_type), intent(in), optional :: vmold
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Integer :: err_act
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character(len=20) :: name='d_base_smoother_bld'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%build(a,desc_a,upd,info,amold=amold,vmold=vmold)
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else
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info = 1121
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call psb_errpush(info,name)
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endif
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if (info /= psb_success_) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_bld
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!
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! Free method (aka destructor).
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! In most cases we could do without; however
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! for cases where there are data objects allocated outside
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! of the Fortran RTE we need to free them explicitly.
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!
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! Even in that case, we could do without this if FINAL
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! subroutines were supported, which is not the case
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! in GNU Fortran up to 4.7.
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!
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subroutine mld_d_base_smoother_free(sm,info)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_free
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Implicit None
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! Arguments
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class(mld_d_base_smoother_type), intent(inout) :: sm
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_smoother_free'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%free(info)
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if (info == psb_success_) deallocate(sm%sv,stat=info)
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end if
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if (info /= psb_success_) then
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info = psb_err_alloc_dealloc_
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call psb_errpush(info,name)
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_free
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!
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! Print a description
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!
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subroutine mld_d_base_smoother_descr(sm,info,iout,coarse)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_descr
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Implicit None
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! Arguments
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class(mld_d_base_smoother_type), intent(in) :: sm
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integer, intent(out) :: info
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integer, intent(in), optional :: iout
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logical, intent(in), optional :: coarse
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! Local variables
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integer :: err_act
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integer :: ictxt, me, np
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character(len=20), parameter :: name='mld_d_base_smoother_descr'
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integer :: iout_
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logical :: coarse_
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call psb_erractionsave(err_act)
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info = psb_success_
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if (present(coarse)) then
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coarse_ = coarse
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else
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coarse_ = .false.
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end if
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if (present(iout)) then
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iout_ = iout
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else
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iout_ = 6
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end if
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if (.not.coarse_) &
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& write(iout_,*) 'Base smoother with local solver'
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if (allocated(sm%sv)) then
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call sm%sv%descr(info,iout,coarse)
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if (info /= psb_success_) then
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info = psb_err_from_subroutine_
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call psb_errpush(info,name,a_err='Local solver')
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goto 9999
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end if
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_d_base_smoother_descr
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!
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! Dump
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! to file, for debugging purposes.
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!
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subroutine mld_d_base_smoother_dmp(sm,ictxt,level,info,prefix,head,smoother,solver)
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use psb_base_mod
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use mld_d_base_smoother_mod, mld_protect_name => mld_d_base_smoother_dmp
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implicit none
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class(mld_d_base_smoother_type), intent(in) :: sm
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integer, intent(in) :: ictxt,level
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integer, intent(out) :: info
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character(len=*), intent(in), optional :: prefix, head
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logical, optional, intent(in) :: smoother, solver
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integer :: i, j, il1, iln, lname, lev
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integer :: icontxt,iam, np
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character(len=80) :: prefix_
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character(len=120) :: fname ! len should be at least 20 more than
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logical :: smoother_
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! len of prefix_
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info = 0
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if (present(prefix)) then
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prefix_ = trim(prefix(1:min(len(prefix),len(prefix_))))
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else
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prefix_ = "dump_smth_d"
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end if
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call psb_info(ictxt,iam,np)
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if (present(smoother)) then
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smoother_ = smoother
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else
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smoother_ = .false.
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end if
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lname = len_trim(prefix_)
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fname = trim(prefix_)
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write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam
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lname = lname + 5
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! At base level do nothing for the smoother
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if (allocated(sm%sv)) &
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& call sm%sv%dump(ictxt,level,info,solver=solver,prefix=prefix)
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end subroutine mld_d_base_smoother_dmp
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